Disk wheel



Oct. 27, 1925' G. H. FORSYTH DISK WHEEL Filed Oct. 10 1921 Patented Oct. 27,1925.

.UNlTED STATES 1,558,467 PATENT OFFICE- 'GEORGE E. FO'RS YTH, OF CHICAGO, ILLINOIS, ASSIGNOR TO MOTOR WHEEL CORPORA- rroN, or LANSING, MICHIGAN,

A CORPORATION OF MICHIGAN.

DISK WHEEL.

Applicatfonfiled October 10, 1921. Serial No. 506,625.

To all whom it may concem:

Be it known that I, GEORGE H. FoRsY'rH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Disk Wheels, of which the following is a specification.

In the case of disk Wheels constructed of sheet metal it has been experienced that the disk at times acts as a sounding board to 'am lify anddisseminate any sounds emanatmg from the axle, the bearings, brakes; looseparts adjacent thereto or even from i contact with hard objects in the road. The

dished shape of'the disk and its confinement within the rim and about the hub impart thereto some of the resonant characteristics of a bell.. I 4

In the assembly of wheels of the steel disk type it is recognized as important that the disk shall be rearwardly supported in that portion adjacent the hub as a means of reinforcing the sheet metal against bending in its vulnerable area. This has been done in various ways but frequently the rear disk support has not minimized but often'has increased the vibratory resonant qualities of the disk. 1

The primary object of the present invention is the reduction of the disk vibration to theend that there shall be no sound emitted-due to resonance and I accomplish this object preferably by utilizing'the rear disk support as a means-to mute the disk in a manner analogous tothe silencing of a bell by touching the same with the finger or other non-vibratory object.

The advanta es of the present invention may be realize in a measure by employing a non-metallic support; but where the su port is of metal a facing of non-metallic character is preferably inter osed in order to more efliciently' mute the 1sk and also to prevent the wear which would otherwise'result betweencontacting metal surfaces.

Whether the support be of wood or metal, it is found advisable to so sha the 'supporting plate, either bending to. cup

shapeor -routing out its central area, that the support shall contact with'the disk at a distance from the hub rather than throughout, in which case the interposed facing material,'when'used, may be confined to the annular contact area. The maintenance of pressure contact either direct or indirect,

tion of the invention.

firmly pressed againstthe disk, as the cen- F tral part is forced inwardly by the tighten-- ing of the securing bolts.

Furthermore, the employment of a yielding facing material such as a gasket or sheet of impregnated fibrous material serves incidentally to seal the joint between the disk and supporting plate, preventing the entrance of moisture and consequent rusting, a feature of construction which is not, in itself, novel.

In order that the invention may be readily understood in its application to disk wheels generally, I have in the accompany ing drawing illustrated its application in different ways to one type of wheel, the same serving as a basis for detailed descrip- Obvio-usly the details of construction would vary as applied to other types of disk whee-ls without departure from the essence of the invention, wherefore it will be understood that the drawings and description are to be taken in disk; and

Fig. 2 isa similar view wherein a metallic rear support and diskis employed.

Having reference to the drawing the disk body is represented at 11 confined in its peri heral portion by the, usual rim' 12' and with its central, or hub portion confined between the hub plates 13 and 14, the hub generally being indicated at 15,. The central portion of the disk is clamped betweenthe ubplates 13 and 14 upon a. fillerblock, in this instance of wood comprisin laini nations 16 and 16" angularlyd1sposed,g whereby the disk is rearwardly supported adjacent the hub against bending stresses;

The'marginal portion of'the filler block, if of sufiiciently non-vibrator character may I bear directly upon thedis or preferably the same is faced by a sound deadening substance as represented at 17, such as felt, canvas, asbestos, lead or any suitablemuting composition. The facing materiat may if;

desired, be impregnated with a water-repellentsubstance such as asphaltic compositlons.

The insert 17 may obviously extend throughout a greater or less portion of the area of bearing contact between the support 16 and the disk 11.

Preferably the. central or medial areaof the support is relieved, as at116", so that the marginal contact at 17, whether direct clamped upon the filler member 19 by means of the hub plates 13 and 14. As herein illustrated by way of exemplification the marginal portion of the plate 18 is faced by an annulus 19 of muting material through which the supporting plate bears upon the rear face of the disk. 7

Additionally, the transmission of sounds to the wheel may be minimized by the insertion of a sheet or strip of sound deadening material 20 between the rear hub plate 14 andthe supporting plate 18 and between the front hub late 13 and the disk .11, this being particu larly advantageous in connection with the rear wheels of a. vehicle where the function of the rear hub plate is per-.

formed by the brake drum containing elements which are not always noiseless in their operation.

acting upon the disk wherebytoreduce the resonance of the same, said muting means comprising a non-vibratory member associated with the hub and having contact with the rear face of the disk.

the hub and thedisk body, of muting-means 2. In a disk wheel, the combination with acting upon the disk whereby to reduce the resonance of the same, said muting means comprlslng a member associated with the hub and having contact wlth the rear face of the disk, the disk-contacting portion of I the member faced with a soundd'eadening substance. 7 I

3. In a disk wheel,.the combination with the-hub and the disk body, of muting means acting upon the disk whereby toreduce the resonance of the same, said muting meanscomprising a metalplate associated With the hub and having a marginal contact with the rear face of the disk, the disk-contacting portion of the plate faced with a sound deadening substance. v

4. In av disk wheel, the combination with the hub and the disk body, of muting means acting upon the disk whereby to reduce the resonance of the same, said muting means comprising a rearwardly arched plate associated with the hub and having marginal contact with the rear face of the disk in its medial portion, the disk contactin portion of the plate faced with a sound eadening substance. 5. In a disk wheel, the combination with the hub and disk body, of a rear support for the disk, the bearing portion of the support facedwith a sound deadening substance.

In testimony whereof I have hereunto subscribed my name.

GEORGE H. FORSYTH. 

